Replace multiple consecutive occurrences of a character with a single occurrence

Question

I am making a natural language language processing application in Java, I am using data from IMDB and Amazon.

I came across a certain dataset which has words like

Answer 1

You can use regex to find letters that have same letter after it at least two times (since we don't want to remove correct letters like m in comma)

String data="stoooooop partyyyyyy";
System.out.println(data.replaceAll("([a-zA-Z])\\1{2,}", "$1"));
//                                       |      |         |
//                                   group 1   match    replace with 
//                                             from     match from group 1
//                                             group 1
//                                             repeated 
//                                           twice or more

Output:

stop party